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Bosch S6521B Vehicle Battery Bosch High Performance Starter Battery

  • Based on 7 reviews
Condition: New
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$305.22 Why this price?

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Availability: Only 8 left in stock, order soon!
Fulfilled by Homestead Supply & More ✅

Arrives May 9 – May 10
Order within 16 hours and 37 minutes
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Features

  • Bosch Vehicle Battery P/N:S6521B

Description

Bosch S6521B Vehicle Battery Bosch High Performance Starter Battery

Brand: Bosch


Vehicle Service Type: Passenger Car


Voltage: 12 Volts


Item Weight: 42.5 Pounds


Automotive Fit Type: Vehicle Specific Fit


Manufacturer: Bosch


UPC:


Global Trade Identification Number: 50


Compatible with Vehicle Type: Passenger Car


Voltage: 12 Volts


Item Weight: 42.5 Pounds


Brand Name: Bosch


Manufacturer Part Number: S6521B


Manufacturer: Bosch


UPC: 077212000050


Global Trade Identification Number: 50


Item Type Name: Starter Battery


Included Components: Starter Battery


Manufacturer Warranty Description: Please contact us if you experience any issues within 30 days of receipt.


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 9 – May 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Powerful
This is a seriously powerful battery, high quality, great value
Reviewed in the United States on December 27, 2025 by Steven Wingate

  • Good battery
So far this battery has worked surprisingly well… I have left it unused in the car for weeks and it still seems to be full strength
Reviewed in the United States on January 15, 2026 by Jimmy Mac

  • Very good battery
This battery is a good value and was very easy to install. The batter functions well and fit perfectly and has a good battery life.
Reviewed in the United States on October 2, 2025 by dawn miller

  • Battery lasted barely a year and ghosted
I purchased this Bosch battery for my Land Rover because the previous Bosch battery had lasted over 8 years . Well this new Bosch barely lasted 1 year and would not take a charge. The sellers are impossible to get ahold of so will try to go through Amazon. Poor service and product but in honesty have had very few Bosch products but this exception ... show more
Reviewed in the United States on March 27, 2026 by Nordlander

  • Well Made
You can't beat these batteries. Another company make them but who cares. My last one lasted six years while the same model car had a different battery and last two. Pay the extra money and get some dependability.
Reviewed in the United States on December 31, 2024 by D. Davis

  • GREAT BATTERY
WENT THROUGH 3 BATTERIES THIS ONE WORKED WASTED $450.00 ON OTHERS!!!!
Reviewed in the United States on December 7, 2024 by HAMSTER

  • Typical Bosch excellence.
Engine turns over very quickly for fast starting.
Reviewed in the United States on March 14, 2024 by bobbobwhite

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